Andrew rankin



y the opposite edge to the plated).

@anni aan.

ANDVREW.' "RANNIN, or PHILADELPLHA,l PENNSYLVANIA.-

Iletters Batent'Na10713:datedselitimber 27 1870;

iMeRovEMENT`|N1sPR|NGH|NeEs FOR noone-ee.

The Schedule referred to in lliese `Letters Patent and making part ofthe same HI, ANnBEW RANKImof Philadelphia, county of l1?hiladelphia,State of Pennsylvania, have invented an y Improvement inSelf-closing Doors, of which the following is `a specification." L eNature and Object of theIiwention.

' Myinv'en't-ion relates to a'hi'ngehaving tlireeleaves, l so jointed asto open?frmeither-side, and wthwvhich a spring isconbined, 'so as to,close the .hingeafter it `has been opened in eitl'l'erdirection andMy-invention consists of a-detachable 'plat-@pro-`videdwitlrrollersfandv arranged-on the hinge so that,

A 1 The invention furtherconsists in the combination thesame,"accessvmayV be had tothe of the above, and a bar connected to `thechain, and

l `secured to one of the leaves, so fas to be detachable' i fr om thesame.`

l Description ofthe Accompanying ,Drawing/ `Figure 1 is a sectionalplan'ot partof a door and door-trarne, with myimprovement; j

` Figure 2,. thesame, showingthe door. open;

Figure, the same,`showing'the spring' disconnecty Figure 4, a verticalsectionot' g.`1,on the' line L2.. V

B, part .of afdoor, the two beingconnected together,

in thegpresent instance-,t by double hinges, each of v which-consists ofa` plate, D, secured to the frame, a

.l rplate, E, secured to thel door, and'an'inter'mcdiate plate, F,hinged at `one edge Atothe plate E, and at In Atheedge "of the dooradjacent to the hinge vis formed achamber for receiving a spiral spring,Gr,

; and within lthe `latter is a rod, H, connected by a chain to a shortrod, J, a washer, afat theend ofthev y rod H,` bearing `.tgainst one endof the spring, while the opposite end-of the latter bears against adetachable plate, b, attached to the plate VE of the hinge,

`and carrying two rollers, f between which the chain I passes, and"bywhich theisaid chain is guided.

opening in the plate D of thehin'ge, and to receive a Ltion, d, on thesaid plate, and is contained within a recess, e, in the door-frame A.

Then `this pinv is in its place, it serves t0, so confine the chain tothe door-frame that the door cannot Vbe On'removingthe screw-pin,however, the chain will he at liberty, and thespring will be renderedinoperative as a means of closing the door. a The advantages of myinvention will be readilynnderstood by those familiar with the hanging.of ordnary self-closing doors, the springs and other attachments ofwhich demand tedious manipulation' in adjusting. l

When thedoor has to be unhung, the pin a: should be first withdrawn,when the spring ceases be an obstacle in the way of unfastening thehinges, and, by removing the detachable plate l), the spring may bcreadily withdrawn for repairs or other purposes.

The advantages of rollers ff, for yinsuring thecasy movement of thechain, need no explanation. Althoughl have shown the detachable plateb'and its rollers `as applied to a double hinge, it will be evidentthatit is equally applicableto a singlev hinge. It will also be evidentthatv the spring I may be contained within a-recess inthe door-frame, inwhich duced into a recess in the door.

G-of the recessed plate E, its plate b carrying rollers fj, slotted.plate 1*, and plate D, and its detachable bar J extending into theslotted plate F,'as set forth.

2. The two rollers ff, arranged on a'detachable plate adapted to theplate E of the hinge, as seti'oi'th.

l Witnesses:

WM. A. STEEL, HARRY SMITH.

y The' short rod J is arranged to project throu'ghan` A pointedscrew-pin, rv, which passes through a projecopened in either direction`without'compressingtlie spiral spring G, which renders the doorself-closing.

case the chain must be connected by a piri,`:v, intro l y 1. `Thecombination, with the chain Iand spring'

